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Influence of shear modulus and drift capacity on non-linear static analysis of masonry buildings

Influence of shear modulus and drift capacity on non-linear static analysis of masonry buildings
Auteur(s): , , ORCID, ,
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Présenté pendant IABSE Symposium: Towards a Resilient Built Environment Risk and Asset Management, Guimarães, Portugal, 27-29 March 2019, publié dans , pp. 876-883
DOI: 10.2749/guimaraes.2019.0876
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In nonlinear static analysis of masonry buildings, the hysteric behaviour of masonry walls is commonly idealized through a bi-linear resistance envelope defined by the lateral stiffness of the wall...
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Détails bibliographiques

Auteur(s): (University of Pisa, Pisa, Italy)
(University of Pisa, Pisa, Italy)
ORCID (University of Pisa, Pisa, Italy)
(University of Pisa, Pisa, Italy)
(University of Pisa, Pisa, Italy)
(University of Pisa, Pisa, Italy)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Symposium: Towards a Resilient Built Environment Risk and Asset Management, Guimarães, Portugal, 27-29 March 2019
Publié dans:
Page(s): 876-883 Nombre total de pages (du PDF): 8
Page(s): 876-883
Nombre total de pages (du PDF): 8
DOI: 10.2749/guimaraes.2019.0876
Abstrait:

In nonlinear static analysis of masonry buildings, the hysteric behaviour of masonry walls is commonly idealized through a bi-linear resistance envelope defined by the lateral stiffness of the wall, the ultimate shear resistance and the ultimate inter-storey drift. Therefore, it becomes fundamental to properly set the modulus of elasticity and shear modulus for masonry as well as to properly evaluate the drift capacity of the walls.

In the paper, the combined influence of shear modulus and drift capacity definition on the assessment of seismic performance of masonry buildings is investigated in details by means of a simplified non-linear pushover type algorithm developed by the authors. In particular, two different definitions are considered for the drift capacity, in terms of ductility and in terms of percentage of the inter-storey height, while for the shear modulus a reasonable set of values is investigated according a database collected combining masonry test results available in the relevant scientific literature with an in situ experimental campaign carried out by the authors.

The results show how the variation in shear modulus can lead to conflicting outcomes for the evaluation of seismic performance of masonry buildings depending on the assumed definition of drift capacity.